DE102019216468A1 - POWER CONVERSION CABLE DEVICE - Google Patents

Abstract

A power conversion cable device (100A) includes: a connector (110) having a connector (T11, T12) connectable to an AC output; a DC plug (130) which has a connection (T21, T22) which can be connected to a DC input of a vehicle; a cable (120) connecting the plug and the DC connector; an abnormality detection module (U1); and an AC / DC conversion circuit (23). The abnormality detection module (U1) is designed to detect an abnormality of a current at a detection point (D1). The AC / DC conversion circuit (23) is arranged and designed on the terminal side (T21, T22) with respect to the detection point (D1), AC power input from the terminal side (T11, T12), convert to DC power and output the DC power to the side of the connection (T21, T22).

Description

This non-provisional application is based on the one filed with the Japanese Patent Office on October 29, 2018 Japanese Patent Application No. 2018-202863 , the content of which is hereby incorporated by reference.

background

Territory

The present invention relates to a power conversion cable device.

Description of the prior art

In recent years, electric vehicles (for example, electric vehicles or plug-in hybrid vehicles), which are mainly driven by electrical power or electrical energy, have been increasingly used with a view to preserving the environment. Such vehicles include an input that is configured to receive electrical power or electrical energy that is supplied from an energy supply device in order to charge a battery mounted on a vehicle with the electrical power that is received through the input. If a connector or plug of a charging cable of the energy supply device is connected to the input of the vehicle, electrical power or electrical energy can be supplied from the energy supply device via the charging cable to the input of the vehicle.

An AC power supply method (hereinafter referred to as “AC method”) and a DC power supply method (hereinafter referred to as “DC method”) are known as the main energy supply method. A normal charger and a quick charger are known as main energy feeding devices. The AC method is used in the normal charger and the DC method is used in the quick charger. A normal charger with an electrical output contains an electrical output for AC power or AC energy (hereinafter referred to as “AC output”). A charging cable that includes a plug at one end and a connector at the other end is used in the normal electric output charger. The plug of the charging cable is connected to the AC output of the normal charger, and the connector of the charging cable is connected to an input for AC power (hereinafter referred to as "AC input") of a vehicle.

The battery mounted on a vehicle can also be charged with electrical power or electrical energy that is output from a household AC output. The JP 2010 - 110 055 A For example, discloses a charging cable that includes a plug that is connectable to a household AC output (more specifically, an electrical output of a single phase AC voltage of 100 V provided on an exterior wall of a house).

Summary

A connector of the charging cable that is in the JP 2010 - 110 055 is connected to an AC input of a vehicle. Therefore, the charging cable that is in the JP 2010 - 110 055 A is not used for a vehicle that does not contain an AC input. The widespread use of a vehicle that contains only one input for DC power (hereinafter referred to as “DC input”) is expected in the future. In the following, a vehicle that contains only one DC input is referred to as a “DC-bound vehicle”. Generally, an energy feeder designed for the DC process is large and difficult to place in a house. It is therefore necessary to manufacture a new tool for the DC-bound vehicle for the future described above, to which electrical power is to be supplied from the AC output.

The present invention has been made to solve the above-described problem, and it is an object of the present invention to provide a power conversion cable device that enables a vehicle that contains only one DC input to receive electrical power is supplied to an AC output, and which is capable of detecting an abnormality of a current during an electrical power supply.

A power conversion cable device according to the present invention includes: a connector having an AC connector connectable to an electrical output for AC power (AC output); a DC connector having a DC connector connectable to an input for DC power of a vehicle; a cable connecting the plug and the DC connector; an abnormality detector; and a power conversion circuit. The abnormality detector is designed to detect an abnormality of a current at a detection point between the AC terminal and the DC terminal. The power conversion circuit is arranged on the DC connection side with respect to the detection point, and is designed to convert AC power input from the AC connection side to DC power and output the DC power to the DC connection side.

The power conversion cable device described above can receive the AC power output from the AC output at the connector. Then the AC power received at the connector can be converted to DC power by the power conversion circuit described above. In addition, the DC connector can be connected to the DC input of the vehicle. Therefore, a vehicle containing only a DC input can receive electrical power from the AC output using the power conversion cable device described above. The power conversion cable device can convert the AC power output from the AC output to the DC power and supply the DC power to the vehicle. In addition, the above-described abnormality detector in the power conversion cable device can detect an abnormality of the current during an electric power supply.

Since the AC output outputs electrical power supplied from a power supply, the plug side corresponds to the upstream side (side near the power supply), and the DC connector side corresponds to the downstream side (side away from the power supply) in the Power conversion cable device described above. The abnormality detector detects an abnormality of the current downstream of the detection point. For example, the abnormality detector may detect the abnormality of the current based on a state of the current flowing from the downstream side to the upstream side. In the power conversion cable device described above, the detection point of the abnormality detector is located upstream (on the connector side) of the power conversion circuit, and thus the abnormality detector can detect the abnormality of the current in a wide range.

In the power conversion cable device described above, the abnormality detector may include: a current sensor configured to detect the current at the detection point; a switch configured to switch conducting and interrupting or disconnecting a current between the AC connection and the power conversion circuit; and a controller configured to control the switch. The controller may be configured to place the switch in an open state when it is determined using a result of detection by the current sensor that the current at the detection point has an abnormality.

For example, according to the power conversion cable device described above, the current through the switch is cut off when the abnormality of the current occurs during the electric power supply to the vehicle. As a result, a circuit on the power receiving side (for example, an electronic circuit of the vehicle) can be appropriately protected.

In the power conversion cable device described above, the abnormality detector may be housed in a housing of the connector. The power conversion circuit can be accommodated in a housing of the DC connector.

If an intermediate part of the cable is difficult to use in the power conversion cable device, the power conversion cable device tends to be bulky. In this regard, in the power conversion cable device described above, the abnormality detector and the power conversion circuit are arranged in portions (the plug and the DC connector) that are not the cable. Therefore, the unwieldiness of the power conversion cable device caused by adding the abnormality detector and the power conversion circuit can be reduced.

In the power conversion cable device described above, the abnormality detector and the power conversion circuit can be housed in the same housing of the connector.

In the power conversion cable device described above, the Abnormality detector and the power conversion circuit arranged in a single housing. Therefore, by providing a power supply (ie, a power supply common to the abnormality detector and the power conversion circuit) in the housing, electric power for driving the abnormality detector and the power conversion circuit can be secured. In addition, in the power conversion cable device described above, the abnormality detector and the power conversion circuit are housed in the housing of the connector. Therefore, the AC terminal is close to the abnormality detector and the power conversion circuit. Thus, in a configuration in which the electric power for driving the abnormality detector and the power conversion circuit is ensured from the electric power input from the AC output to the AC terminal, wiring for pulling the electric power can be performed in the abnormality detector and the power conversion circuit can be simplified.

In the power conversion cable device described above, the abnormality detector and the power conversion circuit may be housed in a housing of the DC connector.

In the power conversion cable device described above, the abnormality detector and the power conversion circuit are housed in the housing of the DC connector, and thus the size of the connector can be easily reduced. Because the connector of the power conversion cable device can be reduced in size, the power conversion cable device can be designed for many AC outputs (and also for different infrastructures).

In the power conversion cable device described above, a case configured to house the abnormality detector and the power conversion circuit may be arranged halfway along the cable.

In the power conversion cable device described above, the abnormality detector and the power conversion circuit are arranged in portions (along the cable) that are not the connector and the DC connector. Therefore, an existing connector (e.g., a connector used in a general charging cable designed for the AC method) and an existing DC connector (e.g., a connector used in a general charging cable) can be used as a plug and a DC connector which is designed for the DC method) can be used as is. The use of existing components leads to a reduction in costs.

In the power conversion cable device described above, the abnormality detector may be housed in a housing of the connector. A housing that is designed to house the power conversion circuit can be located halfway along the cable.

In the power conversion cable device described above, the abnormality detector and the power conversion circuit are arranged in portions that are not the DC connector. Therefore, as the DC connector, an existing DC connector (for example, a connector used in a general charging cable designed for the DC method) can be used as it is. Using an existing component leads to a reduction in costs. Since the abnormality detector is mounted in the connector and the power conversion circuit is mounted along the cable, an excessive increase in the size of the connector or an intermediate part of the cable can be prevented.

In the power conversion cable device described above, a case configured to house the abnormality detector may be arranged halfway along the cable. The power conversion circuit can be accommodated in a housing of the DC connector.

The housing described above (housing which houses the abnormality detector) arranged along the cable can be implemented by a CCID box (CCID: charging circuit breaker) used in a general charging cable designed for the AC method . An existing plug (for example, a plug used in a general charging cable designed for the AC process) can be used as the plug as it is. Using the existing components as described above leads to a reduction in costs.

The above and other objects, features, aspects, and advantages of the present invention will become apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

Figure list

• 1 FIG. 12 shows an appearance of a power conversion cable device according to a first embodiment of the present invention.
• 2nd 12 illustrates an internal configuration of the power conversion cable device according to the first embodiment.
• 3rd shows details of an AC / DC conversion circuit of the 2nd .
• 4th FIG. 12 illustrates an internal configuration of a power conversion cable device according to a second embodiment.
• 5 FIG. 12 illustrates an internal configuration of a power conversion cable device according to a third embodiment.
• 6 FIG. 12 shows an appearance of a power conversion cable device according to a fourth embodiment of the present invention.
• 7 12 illustrates an internal configuration of the power conversion cable device according to the fourth embodiment.
• 8th 12 illustrates an internal configuration of a power conversion cable device according to a fifth embodiment.
• 9 12 illustrates an internal configuration of a power conversion cable device according to a sixth embodiment.

Description of the preferred embodiments

In the following, embodiments of the present invention are described in more detail with reference to the drawings, in which the same or corresponding parts are denoted by the same reference symbols, the description of which is not repeated.

First embodiment

1 FIG. 12 shows an appearance of a power conversion cable device according to a first embodiment of the present invention. In 1 the power conversion cable device according to the present embodiment includes a plug 110 , a DC connector 130 and a cable 120 that the plug 110 and the DC connector 130 connects. There can be a known flexible cable used in a general charging cable as a cable 120 be used.

The plug 110 can be connected to an electrical output for AC power (AC output). Examples of the AC output include a normal charger AC output or a household AC output. The household AC output is connected to a system power supply or system power source via a circuit breaker. The system power supply is an AC power supply (for example, a single-phase AC power supply that has a voltage of 100 V or 200 V) that is supplied to electrical power from an energy network (for example, an energy network provided by an energy company).

The DC connector 130 can be connected to an input for DC power (DC input) of a vehicle. Examples of the vehicle's DC input include DC inputs that are designed for different types of energy supply processes (for example, a CHAdeMO process, a CCS process (CCS: combined charging system) and a GB / T process).

2nd provides an internal configuration of a power conversion cable device 100A according to the first embodiment.

In 2nd points the plug 110 a housing B1 and an abnormality detection module U1 on that in the case B1 is housed. The plug 110 also has connections T11 to T13 on. The connections T11 to T13 lie from a surface of the housing B1 free. If the plug 110 inserted into the AC output are the connectors T11 , T12 and T13 of the plug 110 connected to a live connection (HOT connection or HOT connection), a current return connection (COLD connection or KALT connection) and a ground connection of the AC output (and also the AC power supply). The connections T11 and T12 are with respective power lines PL1 and PL2 in the housing B1 connected, and the connector T13 is with a ground line GL in the housing B1 connected. The connections T11 and T12 according to the present embodiment correspond to an example of a respective “AC connection” according to the present invention.

The cable 120 has a jacket (outer casing) SH, and the power lines PL1 and PL2 and the ground line GL are housed in the jacket SH. The power lines PL1 and PL2 and the ground line GL extend over the connector 110 , the cable 120 and the DC connector 130 .

The DC connector 130 has a housing B2 and a power conversion module U2 on that in the case B2 is housed. The DC connector 130 also has connections T21 and T22 on. The connections T21 and T22 lie from a surface of the housing B2 free. If the DC connector 130 Connected to the vehicle's DC input are the connectors T21 and T22 of the DC connector 130 electrically connected to corresponding connections of the vehicle's DC input. As a result, the electrical power supplied to the connectors T21 and T22 is output to the vehicle (and also a battery mounted on the vehicle). The connections T21 and T22 correspond to a positive connection (P connection) and a negative connection (N connection) and are connected to the respective power lines PL1 and PL2 in the housing B2 connected. The connections T21 and T22 according to the present embodiment correspond to an example of a respective “DC connection” of the present invention.

The abnormality detection module U1 contains a control 11 and a power supply circuit 12th , and the power conversion module U2 contains a control 21 and a power supply circuit 22 . The power supply circuits 12th and 22 are designed to drive power (ie electrical power to operate the controls) to the respective controls 11 and 21 to deliver.

Each of the controls 11 and 21 includes a processor, memory device, and an input / output port (none are shown). A CPU (central processing unit) can be used as a processor, for example. The memory device includes a RAM (random access memory) configured to temporarily store data, and a memory (for example, a ROM (read only memory) and one writable non-volatile memory) that is designed to save various types of information. In addition to programs used in the various types of controllers, various parameters used in the programs are also stored in the memory in advance. The processor executes the programs stored in the memory device, and thereby the various types of controls are performed. The different types of controls can be carried out not only by means of software, but also by means of associated hardware (electronic circuit).

The power supply circuits 12th and 22 are designed to control the control power 11 and 21 using AC power from the power lines PL1 and PL2 is supplied to generate and the generated drive power to the respective controls 11 and 21 feed. Each of the power supply circuits 12th and 22 contains, for example, an AC / DC conversion circuit. The power supply circuits 12th and 22 are designed to take the AC power from the power lines PL1 and PL2 is supplied to convert to DC power to control the controls 11 and 21 suitable is.

The abnormality detection module U1 contains in addition to the controller 11 and the power supply circuit 12th also switch 13 and 14 as well as current sensors 15 and 16 . The abnormality detection module U1 according to the present embodiment corresponds to an example of an “abnormality detector” according to the present invention.

The switches 13 and 14 are in the respective power lines PL1 and PL2 arranged. The switches 13 and 14 are designed to conduct and disconnect or interrupt a current between the connections T11 and T12 of the plug 110 and an AC / DC conversion circuit 23 in the housing B2 of the DC connector 130 to switch. A state (closed state (conductive state) or open state (disconnected state or open state)) of the switches 13 and 14 is from the controller 11 controlled. For example, a respective electromagnetic mechanical relay can be used as a switch 13 and 14 be used. However, a respective solid-state relay, which is referred to as “SSR (solid-state relay)”, can also act as a switch 13 and 14 be used. Examples of the semiconductor relay include a relay formed from a thyristor, a triac or a transistor (e.g. IGBT, MOSFET or bipolar transistor).

The current sensors 15 and 16 are designed to have a respective current flowing through the power lines PL1 and PL2 flows to capture. The current sensors 15 and 16 are at a given detection point D1 arranged and designed the current at the detection point D1 capture. In the present embodiment, the detection point is D1 near the switches 13 and 14 (more precisely on the side of the connections T21 and T22 in terms of switches 13 and 14 ) in the housing B1 arranged.

The power conversion module U2 contains in addition to the controller 21 and the power supply circuit 22 also the AC / DC conversion circuit 23 . The AC / DC conversion circuit 23 is on the side of the connections T21 and T22 in relation to the current sensors 15 and 16 (and also the detection point D1 ) arranged. The AC / DC conversion circuit 23 according to the present embodiment corresponds to an example of a “power conversion circuit” according to the present invention.

3rd shows details of the AC / DC conversion circuit 23 . According to 3rd contains the AC / DC conversion circuit 23 a power factor correction circuit (PFC circuit) 231 , an isolation circuit 232 and a rectifier circuit 233 . The PFC circuit 231 contains a rectifier circuit 231a and an inverter 231b . The isolation circuit 232 is an isolation transformer that has a first coil 232a and a second coil 232b contains.

The rectifier circuit 231a is designed to rectify and amplify the input AC power. More specifically, the rectifier circuit contains 231a two pairs of upper and lower arms, two coils and a smoothing capacitor. In each pair of upper and lower arms, the upper arm contains a diode and the lower arm contains a switching element. The switching element of the lower arm is controlled by the controller 21 controlled. Each switching element in the rectifier circuit 231a is included by the controller 21 controlled, and thus serves the rectifier circuit 231a as a boost chopper circuit.

The inverter 231 b is a full-bridge circuit that contains four switching elements. Each switching element is controlled by the controller 21 controlled. Every switching element in the inverter 231b is included by the controller 21 controlled, and the DC power provided by the rectifier circuit 231a into the inverter 231b is entered, it is converted into high-frequency AC power.

In the isolation circuit 232 is a second coil 232b on the side of the connectors T11 and T12 (PFC circuit side 231 ) with respect to a first coil 232a arranged. The rectifier circuit 233 is with the first coil 232a the isolation circuit 232 via an electrical line connected, and the PFC circuit 231 is with the second coil 232b the isolation circuit 232 connected via an electrical line.

The first coil 232a and the second coil 232b are electrically isolated from each other. An electrical current path on the side of the connections T11 and T12 (PFC circuit side 231 ) with respect to the second coil 232b and an electrical current path on the side of the terminals T21 and T22 (Rectifier circuit side 233 ) with respect to the first coil 232a are through the isolation circuit 232 electrically isolated from each other. The isolation circuit 232 amplifies an AC voltage that is applied to the second coil 232b is applied, and supplies the amplified AC voltage to the first coil 232a out.

The rectifier circuit 233 is a diode bridge circuit that contains four diodes. The rectifier circuit 233 is designed to take the AC power from the first coil 232a the isolation circuit 232 is supplied to convert to DC power.

Regarding 2nd is the AC / DC conversion circuit 23 trained as described above (see 3rd ) and is thus designed to perform an AC / DC conversion (conversion from AC to DC) of the AC power generated by the connections T11 and T12 is entered, perform and DC power to the connectors T21 and T22 to spend. The configuration of the AC / DC conversion circuit 23 is not on the in 3rd configuration shown is limited. The AC / DC conversion circuit 23 can be, for example, a rectifier circuit that does not contain an isolation circuit.

In the abnormality detection module U1 determines the control 11 using a detection result of the current sensors 15 and 16 whether the current at the detection point D1 has an abnormality. In the power conversion cable device 100A corresponds to the side of the connections T11 and T12 the upstream side (side near the power supply), and the side of the connections T21 and T22 corresponds to the downstream side (side away from the power supply). The detection result of the current sensors described above 15 and 16 indicates the abnormality of the current downstream of the detection point D1 at. The control 11 For example, may determine that an abnormality of the current (more specifically, a leakage current) occurs when an equilibrium state of the current passes through the detection point D1 flows, is disturbed. The control 11 can also determine that an abnormality of the current (more specifically, an overcurrent) occurs when an excessive current at the detection point D1 is recorded. In the power conversion cable device 100A according to the present embodiment is the detection point D1 in the housing B1 of the plug 110 (ie upstream of the AC / DC conversion circuit 23 ) arranged, and thus the abnormality of the current in a wide area, the cable 120 and the DC connector 130 includes, are recorded.

In the abnormality detection module U1 is the controller 11 designed the switches 13 and 14 to bring in the open state when using the detection result of the current sensors 15 and 16 it is determined that the current at the detection point D1 has an abnormality. Therefore, when the abnormality of the current occurs during the electric power supply to the vehicle, for example, the current through the switches 13 and 14 interrupted. As a result, a circuit on the power receiving side (for example, an electronic circuit of the vehicle) can be appropriately protected.

As described above, the power conversion cable device 100A according to the present embodiment, the AC power output from the AC output on the connector 110 receive. Then the AC power on the connector 110 is received by the AC / DC conversion circuit 23 be converted into DC power. In addition, the DC connector 130 connectable to the vehicle's DC input. Therefore, a vehicle that contains only one DC input (DC-bound vehicle) can use the power conversion cable device described above 100A receive electrical power from the AC output. The power conversion cable device 100A can convert the AC power output from the AC output to DC power and supply the vehicle with the DC power. In addition, the abnormality detection module described above U1 in the power conversion cable device 100A detect the abnormality of the current during the electric power supply.

The abnormality detection module U1 is in the housing B1 of the plug 110 housed. The power conversion module U2 (and also the AC / DC conversion circuit 23 ) is in the housing B2 of the DC connector 130 housed.

If an intermediate part of the cable 120 in the power conversion cable device 100A is difficult to use, the power conversion cable device 110A unwieldy. If the intermediate part of the cable 120 is heavy, it is particularly difficult the power conversion cable device 100A to carry or carry or the DC connector 130 connect to the vehicle's DC input. In the power conversion cable device 100A according to the present embodiment are the abnormality detection module U1 and the power conversion module U2 not in the cable 120 arranged. Therefore, unwieldiness of the power conversion cable device 100A by adding the abnormality detection module U1 and the power conversion module U2 is caused to be reduced.

In general, the DC input of the vehicle is located at a position higher than that of the AC output. In the power conversion cable device 100A according to the present embodiment is the AC / DC conversion circuit 23 in the housing B2 of the DC connector 130 arranged, and thus the AC / DC conversion circuit is immersed 23 less likely to be in water. As a circuit configuration of the abnormality detection module U1 easier than that of the AC / DC conversion circuit 23 is formed, the abnormality detection module U1 better water resistance than the AC / DC conversion circuit 23 on.

Second embodiment

A power conversion cable device according to a second embodiment of the present invention will be described below. Since the second embodiment has many features of the first embodiment, the differences are mainly described and the common features are not described repeatedly.

The power conversion cable device according to the second embodiment also has the configuration with that in FIG 1 shown appearance. However, the internal configuration of the power conversion cable device according to the second embodiment is different from that of the first embodiment. 4th provides an internal configuration of a power conversion cable device 100B according to the second embodiment.

In 4th contains the power conversion cable device 100B the plug 110 , the cable 120 and the DC connector 130 . The plug 110 points the case B1 on. In the present embodiment is an integrated module U3 in the housing B1 instead of the abnormality detection module U1 ( 2nd ) housed. The power conversion module U2 ( 2nd ) is not in the housing B2 of the DC connector 130 housed. The cable 120 has the sheath SH and the power lines PL1 and PL2 on, which are housed in the sheath SH. The power lines PL1 and PL2 are routed in such a way that they go over the connector 110 , the cable 120 and the DC connector 130 extend.

The integrated module U3 contains a control 31 and a power supply circuit 32 . The control 31 has the same hardware configuration as the controls 11 and 21 the first embodiment. Ie, the control 31 also includes a processor and a memory device (both are not shown). The power supply circuit 32 is designed to drive the control 31 using AC power to generate power from the power lines PL1 and PL2 is fed, and the controller 31 to supply the drive power generated. The power supply circuit 32 contains, for example, an AC / DC conversion circuit. The power supply circuit 32 is designed to take the AC power from the power lines PL1 and PL2 is supplied to convert to DC power to control the controller 31 suitable is.

The integrated module U3 contains in addition to the controller 31 and the power supply 32 also switch 33 and 34 , Current sensors 35 and 36 as well as an AC / DC conversion circuit 37 . A state (closed state (conductive state) or open state (disconnected state or open state)) of the switches 33 and 34 is from the controller 31 controlled. Switches similar to the switches described above 13 and 14 ( 2nd ) can be used as a switch 33 and 34 be used. In addition, a circuit similar to the AC / DC conversion circuit described above 23 (see for example 3rd ) as an AC / DC conversion circuit 37 be used.

The switches 33 and 34 are in the respective power lines PL1 and PL2 arranged. The switches 33 and 34 are designed to conduct and interrupt or disconnect a current between the connections T11 and T12 and the AC / DC conversion circuit 37 to switch. The current sensors 35 and 36 are designed to sense a current flowing through the respective power lines PL1 and PL2 flows. The current sensors 35 and 36 are at a given detection point D2 arranged and designed the current at the detection point D2 capture. In the present embodiment, the detection point is D2 near the switches 33 and 34 (more specifically between the switches 33 and 34 and the AC / DC conversion circuit 37 ) in the housing B1 arranged. The AC / DC conversion circuit 37 is on the side of the connections T21 and T22 in relation to the current sensors 35 and 36 (and also the detection point D2 ) arranged and designed AC power from the side of the connections T11 and T12 is entered to convert to DC power and the DC power to the side of the connectors T21 and T22 to spend.

In the integrated module U3 is the controller 31 designed an abnormality of the current at the detection point D2 using a detection result of the current sensors 35 and 36 capture. In addition, the control 31 designed the switches 33 and 34 to bring in the open state when using the detection result of the current sensors 35 and 36 it is determined that the current at the detection point D2 has an abnormality (ie, a leakage current or an overcurrent). Therefore, when the abnormality of the current occurs during the electric power supply to the vehicle, for example, the current through the switches 33 and 34 interrupted. As a result, a circuit on the power receiving side (for example, an electronic circuit of the vehicle) can be appropriately protected.

The control 31 , the switches 33 and 34 and the current sensors 35 and 36 according to the present embodiment form an example of an “abnormality detector” according to the present invention. The AC / DC conversion circuit 37 according to the present embodiment corresponds to an example of a “power conversion circuit” according to the present invention. Ie, the integrated module U3 according to the present embodiment includes both the “abnormality detector” and the “power conversion circuit” according to the present invention.

As described above, the power conversion cable device 100B according to the present embodiment, convert the AC power output from the AC output to DC power and supply the DC power to the vehicle. In addition, the integrated module described above U3 detect the abnormality of the current during the electrical power supply.

In addition, the integrated module U3 in the power conversion cable device 100B in the housing B1 of the plug 110 housed. Therefore, the connections are T11 and T12 close to the integrated module U3 . Therefore, wiring can be used to pull the electrical power from the AC output into the connectors T11 and T12 is entered into the integrated module U3 be simplified.

Third embodiment

A power conversion cable device according to a third embodiment of the present invention will be described below. Since the third embodiment has many features of the second embodiment, the differences are mainly described and the description of the common features will not be repeated.

The power conversion cable device according to the third embodiment also has the configuration with that in FIG 1 shown appearance. However, the internal configuration of the power conversion cable device according to the third embodiment is different from that of the second embodiment. 5 provides an internal configuration of a power conversion cable device 100C according to the third embodiment.

In 5 contains the power conversion cable device 100C the plug 110 , the cable 120 and the DC connector 130 . In the present embodiment, the integrated module U3 in the housing B2 of the DC connector 130 and not in the case B1 of the plug 110 housed.

In the integrated module U3 in the housing B2 are the current sensors 35 and 36 at a given detection point D3 arranged and designed a current at the detection point D3 capture. In the present embodiment, the detection point is D3 near the switches 33 and 34 (more specifically between the switches 33 and 34 and the AC / DC conversion circuit 37 ) in the housing B2 arranged. The control 31 is designed the switch 33 and 34 to be brought into an open state when using a detection result of the current sensors 35 and 36 it is determined that the current at the detection point D3 has an abnormality (for example, a leakage current or an overcurrent). The AC / DC conversion circuit 37 is on the side of the connections T21 and T22 in relation to the detection point D3 arranged and designed AC power from the side of the connectors T11 and T12 is entered to convert to DC power and the DC power to the side of the connectors T21 and T22 to spend.

System power is often used as a general AC output, and many AC outputs exist as infrastructures. Therefore, the connector is subject to 110 connected to the AC output has stricter size and shape requirements than the DC connector 130 . In this regard, the integrated module U3 in the power conversion cable device 100C according to the present embodiment in the housing B2 of the DC connector 130 arranged. Hence the size of the connector 110 be reduced. Because the size of the connector 110 the power conversion cable device 100C can be reduced, the power conversion cable device 100C designed for many AC outputs (and also for different infrastructures).

Fourth embodiment

A power conversion cable device according to a fourth embodiment of the present invention will be described below. Since the fourth embodiment has many features of the second embodiment, the differences are mainly described, and the description of the common features is not repeated.

6 FIG. 12 shows an appearance of the power conversion cable device according to the fourth embodiment of the present invention. According to 6 the power conversion cable device according to the present embodiment includes the connector 110 , the DC connector 130 and the cable 120 that the plug 110 and the DC connector 130 connects. The cable 120 however contains an AC side cable 121 , a control box 122 and a DC side cable 123 . A known flexible cable used in a general charging cable can be used as an AC side cable 121 and as a DC-side cable 123 be used. The AC side cable 121 and the control box 122 are via a connecting section C1 interconnected, and the control box 122 and the DC side cable 123 are via a connecting section C2 connected with each other. The connecting sections C1 and C2 can be removable or can be integrated (ie, not removable).

7 provides an internal configuration of the power conversion cable device 100D according to the fourth embodiment.

According to 7 contains the power conversion cable device 100D the plug 110 , the AC side cable 121 , the control box 122 , the DC side cable 123 and the DC connector 130 . The control box 122 has a housing B3 on. In the present embodiment, the integrated module U3 in the housing B3 the control box 122 and not in the case B1 the control box 122 arranged. The AC side cable 121 has a jacket SH1, and the power lines PL1 and PL2 and the ground line GL are housed in the jacket SH1. The DC side cable 123 has a jacket SH2, and the power lines PL1 and PL2 are housed in the jacket SH2. The power lines PL1 and PL2 are routed in such a way that they go over the connector 110 , the cable 120 and the DC connector 130 extend.

In the integrated module U3 in the housing B3 are the current sensors 35 and 36 at a given detection point D4 arranged and designed a current at the detection point D4 capture. In the present embodiment, the detection point is D4 near the switches 33 and 34 (more specifically between the switches 33 and 34 and the AC / DC conversion circuit 37 ) in the housing B3 arranged. The control 31 is designed the switch 33 and 34 to be brought into an open state when using a detection result of the current sensors 35 and 36 it is determined that the current at the detection point D4 has an abnormality (for example, a leakage current or an overcurrent). The AC / DC conversion circuit 37 is on the side of the connections T21 and T22 in relation to the detection point D4 arranged and designed AC power from the side of the connectors T11 and T12 is entered to convert to DC power and the DC power to the side of the connectors T21 and T22 to spend.

In the power conversion cable device 100D according to the present embodiment is the control box 122 halfway or along part of the cable, so to speak 120 arranged, and the integrated module U3 is in the housing B3 the control box 122 housed. Therefore, as a connector 110 and as a DC connector 130 an existing connector (e.g., a connector used in a general charging cable designed for the AC process) and an existing DC connector (e.g., a connector used in a general charging cable used for the DC process) is used) as they are. The use of the existing components leads to a reduction in costs.

The control box 122 in the power conversion cable device 100D can be designed to be mounted on a wall. The housing B3 the control box 122 has, for example, a structure for attachment to a wall mounting bracket. In that the control box 122 is wall-mountable is the power conversion cable device 100D easy to handle. Mechanical stress on the power conversion cable device may also occur 100D due to a weight of the control box 122 be reduced.

Fifth embodiment

A power conversion cable device according to a fifth embodiment of the present invention will be described below. Since the fifth embodiment has many features of the fourth embodiment, the differences are mainly described and the description of the common features will not be repeated.

The power conversion cable device according to the fifth embodiment has the configuration with that in FIG 6 shown appearance. However, the internal configuration of the power conversion cable device according to the fifth embodiment is different from that of the fourth embodiment. 8th provides an internal configuration of the Power conversion cable device 100E according to the fifth embodiment.

In 8th contains the power conversion cable device 100E the plug 110 , the AC side cable 121 , the control box 122 , the DC side cable 123 and the DC connector 130 . In the present embodiment, the abnormality detection module U1 and the power conversion module U2 instead of the integrated module U3 used. The abnormality detection module U1 is in the housing B1 of the plug 110 housed, and the power conversion module U2 is in the housing B3 the control box 122 housed. The configuration of the abnormality detection module U1 and the power conversion module U2 are the same as in the first embodiment (see 2nd ).

In the abnormality detection module U1 in the housing B1 are the current sensors 15 and 16 at a given detection point D5 arranged and designed a current at the detection point D5 capture. In the present embodiment, the detection point is D5 near the switches 13 and 14 (more precisely on the side of the connections T21 and T22 in terms of switches 13 and 14 ) in the housing B1 arranged. The control 11 is designed the switch 13 and 14 to be brought into an open state when using a detection result of the current sensors 15 and 16 it is determined that the current at the detection point D5 has an abnormality (for example, a leakage current or an overcurrent). In addition, the AC / DC conversion circuit 23 in the power conversion module U2 in the housing B3 on the side of the connectors T21 and T22 in relation to the detection point D5 arranged and designed AC power from the side of the connectors T11 and T12 is entered to convert to DC power and the DC power side of the connectors T21 and T22 feed.

In the power conversion cable device 100E according to the present embodiment, the abnormality detection module U1 in the housing B1 of the plug 110 housed. In addition, the control box 122 along part of the cable 120 arranged, and the power conversion module U2 (and also the AC / DC conversion circuit 23 ) is in the housing B3 the control box 122 housed. Therefore, as a DC connector 130 an existing DC connector (e.g., a connector used in a general charging cable designed for the DC method) can be used as it is. Using an existing component leads to a reduction in costs. Because the abnormality detection module U1 in the connector 110 is mounted and the power conversion module U2 in the control box 122 assembled, an excessive increase in the size of the connector 110 or the control box 122 be prevented.

Sixth embodiment

A power conversion cable device according to a sixth embodiment of the present invention will be described below. Since the sixth embodiment has many features of the fifth embodiment, the differences are mainly described and the description of the common features will not be repeated.

The power conversion cable device according to the sixth embodiment has the configuration with that in FIG 6 shown appearance. However, the internal configuration of the power conversion cable device according to the sixth embodiment is different from that of the fifth embodiment. 9 provides an internal configuration of the power conversion cable device 100F according to the sixth embodiment.

According to 9 contains the power conversion cable device 100F the plug 110 , the AC side cable 121 , the control box 122 , the DC side cable 123 and the DC connector 130 . In the present embodiment, the abnormality detection module is U1 in the housing B3 the control box 122 housed, and the power conversion module U2 is in the housing B2 of the DC connector 130 housed. The power lines PL1 and PL2 and the ground line GL are both in the sheath SH1 of the AC-side cable 121 as well as in the sheath SH2 of the DC-side cable 123 housed. The power lines PL1 and PL2 and the ground line GL are guided such that they are over the connector 110 , the cable 120 and the DC connector 130 extend.

In the abnormality detection module U1 in the housing B3 are the current sensors 15 and 16 at a given detection point D6 arranged and designed a current at the detection point D6 capture. In the present embodiment, the detection point is D6 near the switches 13 and 14 (more precisely on the side of the connections T21 and T22 in terms of switches 13 and 14 ) in the housing B3 arranged. The control 11 is designed the switch 13 and 14 to be brought into an open state when using a detection result of the current sensors 15 and 16 it is determined that the current at the detection point D6 has an abnormality (such as leakage current or overcurrent). In addition, the AC / DC conversion circuit 23 in the power conversion module U2 in the housing B2 on the side of the connectors T21 and T22 in Reference to the detection point D6 arranged and designed AC power from the side of the connectors T11 and T12 is entered to convert to DC power and the DC power to the side of the connectors T21 and T22 to spend.

In the power conversion cable device 100F according to the present embodiment, the power conversion module U2 (and also the AC / DC conversion circuit 23 ) in the housing B2 of the DC connector 130 housed. In addition, the control box 122 along part of the cable 120 arranged, and the abnormality detection module U1 is in the housing B3 the control box 122 housed. A plug and a CCID box used in a general charging cable that is designed for the AC process can be used as a plug 110 and control box 122 be used. Using existing components as described above leads to a reduction in costs.

The connecting section C2 ( 6 ) of the control box 122 and the DC side cable 123 in the power conversion cable device 100F connects, can be removable, and a section (DC-side cable 123 and DC connector 130 ) on the side of the DC connector 130 with respect to the connection section C2 can thereby be designed as a holder or the like. As a section (connector 110 , AC-side cable 121 and control box 122 ) on the side of the connector 110 with respect to the connection section C2 an existing charging cable (for example a cable equipped with a CCID box) can be used as is.

Other embodiments

The detection points (for example, detection points D1 to D6 ) for detecting the abnormality of the current can be appropriately changed as long as the detection points on the side of the DC connector (e.g. connectors T21 and T22 ) with respect to the power conversion circuit (e.g. AC / DC conversion circuit 23 , 37 ) are arranged. The detection points for detecting the abnormality of the current can be, for example, on the upstream side with respect to the switches 13 and 14 (or the switches 33 and 34 ) be arranged.

In each of the above-described embodiments, when an abnormality of the current is detected at the detection point, the current through the switch (e.g., the switch 13 , 14 , 33 , 34 ) interrupted. However, a process after the abnormality is detected is not limited to cutting off the power.

The power conversion cable device may include, for example, a notification device (not shown). Examples of the notification device include a display device, a speaker, and a lamp. The power conversion cable device may be configured to output a notification of the occurrence of the abnormality when the abnormality of the current is detected at the detection point. Any notification process can be used. The message can be provided by a display (for example by letters or a picture) on the display device or can be provided by means of sound (including speech) via the loudspeaker or by lighting up of a lamp (including flashing or flashing).

The power conversion cable device may also be configured to record the occurrence of an abnormality when an abnormality of the current is detected at the detection point. The occurrence of an abnormality can be recorded, for example, in a recording device by changing a value of a diagnosis flag (on-board diagnosis) in the recording device of the power conversion cable device from zero to one.

In each of the embodiments described above, the electrical power is used to drive the controller 11 , 21 , 31 Guaranteed or secured by the electrical power from the AC output to the connectors T11 and T12 is entered. However, the present invention is not limited to this. An energy storage device (e.g., battery) may be arranged in the housing in which the controller is housed as a power supply for the controller.

While embodiments of the present invention have been described above, it goes without saying that the embodiments described here are only exemplary and are not to be understood as restrictive. The scope of the present invention is defined by the claims.

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• JP 2018202863 [0001]
• JP 2010110055 A [0005, 0006]
• JP 2010110055 [0006]

Claims (8)

Power conversion cable device comprising: a plug (110) having an AC connection (T11, T12) which can be connected to an electrical output for AC power; a DC connector (130) having a DC connector (T21, T22) connectable to an input for DC power of a vehicle; a cable (120) connecting the plug and the DC connector; an abnormality detector (U1, U3) configured to detect an abnormality of a current at a detection point (D1 to D6) between the AC terminal and the DC terminal; and a power conversion circuit (23, 37) disposed on the DC terminal side with respect to the detection point and configured to convert AC power input from the AC terminal side to DC power and the DC - Output power to the side of the DC connector. Power conversion cable device after Claim 1 , wherein the abnormality detector includes: a current sensor (15, 16, 35, 36) configured to detect the current at the detection point; a switch (13, 14, 33, 34) configured to switch conducting and interrupting a current between the AC terminal and the power conversion circuit; and a controller (11, 31) configured to control the switch and the controller configured to place the switch in an open state when it is determined using a detection result of the current sensor that the current at the detection point is one Has abnormality. Power conversion cable device after Claim 1 or 2nd , wherein the abnormality detector is housed in a housing (B1) of the connector, and the power conversion circuit is housed in a housing (B2) of the DC connector. Power conversion cable device after Claim 1 or 2nd , wherein the abnormality detector and the power conversion circuit are housed in a housing (B1) of the connector. Power conversion cable device after Claim 1 or 2nd , wherein the abnormality detector and the power conversion circuit are housed in a housing (B2) of the DC connector. Power conversion cable device after Claim 1 or 2nd wherein a housing (B3) configured to house the abnormality detector and the power conversion circuit is arranged along a part of the cable. Power conversion cable device after Claim 1 or 2nd , wherein the abnormality detector is housed in a housing (B1) of the connector, and a housing (B3) configured to house the power conversion circuit is arranged along part of the cable. Power conversion cable device after Claim 1 or 2nd wherein a housing (B3) configured to house the abnormality detector is arranged along part of the cable, and the power conversion circuit is housed in a housing (B2) of the DC connector.

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